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相关论文: Ammonia observations towards the Aquila Rift cloud…

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We report sub-arcsecond ALMA observations between 272 - 375 GHz towards Sgr A*'s Circumnuclear disk (CND). Our data comprises 8 individual pointings, with significant SiO (8(7) - 7(6)) and SO (7 - 6) emission detected towards 98 positions…

星系天体物理 · 物理学 2021-08-03 Tomas A. James , Serena Viti , Farhad Yusef-Zadeh , Marc Royster , Mark Wardle

We present photometry of the nearby galaxy NGC 5128 (Centaurus A) observed with the PACS and SPIRE instruments on board the Herschel Space Observatory, at 70, 160, 250, 350 and 500 {\mu}m, as well as new CO J = 3-2 observations taken with…

We present Very Large Array observations of ammonia (NH3) (1,1), (2,2), and CCS (2_1-1_0) emission toward the Infrared Dark Cloud (IRDC) G19.30+0.07 at ~22GHz. The NH3 emission closely follows the 8 micron extinction. The NH3 (1,1) and…

星系天体物理 · 物理学 2015-05-27 K. E. Devine , C. J. Chandler , C. Brogan , E. Churchwell , R. Indebetouw , Y. Shirley , K. J. Borg

We present an analysis of the diffuse ultraviolet (UV) background in a low latitude region near the Aquila Rift based on observations made by the Galaxy Evolution Explorer (GALEX). The UV background is at a level of about 2000 ph cm^-2 s^-1…

星系天体物理 · 物理学 2015-10-14 S. N. Jyothy , Jayant Murthy , Narayanankutty Karuppath , N. V. Sujatha

We present ALMA 870 micron (345 GHz) data for 49 high redshift (0.47<z<2.85), luminous (11.7 < log L(bol) (Lsun) < 14.2) radio-powerful AGN, obtained to constrain cool dust emission from starbursts concurrent with highly obscured…

We present 1" (<100 pc) resolution maps of millimeter emission from five molecules-CN, HCN, HCO+, CH3OH, and HNCO-obtained towards NGC 4038, which is the northern galaxy of the mid-stage merger, Antennae galaxies, with the Atacama Large…

We present here the continuum submillimeter maps of the molecular cloud around the M42 Nebula in the Orion region. These have been obtained in four wavelength bands (200, 260, 360 and 580 microns) with the ProNaOS two meter balloon-borne…

天体物理学 · 物理学 2009-11-06 Xavier Dupac , M. Giard , J. -P. Bernard , J. -M. Lamarre , C. Mény , F. Pajot , I. Ristorcelli , G. Serra , J. -P. Torre

We measured 304 absorption features in the ultraviolet and visible spectra of the star 51 Oph, which is known to have a debris disk with a high inclination. We analyzed the relative populations of atoms in excited fine-structure and…

太阳与恒星天体物理 · 物理学 2021-09-08 Edward B. Jenkins , Cecile Gry

We present 247-GHz molecular line observations of methanol (CH$_3$OH) toward sixteen massive star-forming regions, using the APEX telescope with an angular resolution of $25''$. The sample covers a range of evolutionary states, including…

Context: The bulk of the Molecular gas in the Central Molecular Zone (CMZ) of the Galactic center region shows warm kinetic temperatures, ranging from $>20$ K in the coldest and densest regions (n$\sim 10^{4-5}$ cm$^{-3}$) up to more than…

星系天体物理 · 物理学 2018-02-28 D. Riquelme , L. Bronfman , R. Mauersberger , R. Finger , C. Henkel , T. L. Wilson , P. Cortes-Zuleta

Utilizing ASCA archival data of about 300 objects of elliptical galaxies, groups, and clusters of galaxies, we performed systematic measurements of the X-ray properties of hot gas in their systems, and compiled them in this paper. The…

天体物理学 · 物理学 2015-06-24 Yasushi Fukazawa , Kazuo Makishima , Takaya Ohashi

New VLA images of NH3 (1,1), (2,2), and (3,3) emission in the central 10 parsecs of the Galaxy trace filamentary streams of gas, several of which appear to feed the circumnuclear disk (CND). The NH3 images have a spatial resolution of…

天体物理学 · 物理学 2009-11-06 Robeson S. McGary , Alison L. Coil , Paul T. P. Ho

Jupiter's tropospheric ammonia (NH\textsubscript{3}) abundance is studied using spatially-resolved 5-\textmu m observations from CRIRES, a high resolution spectrometer at the European Southern Observatory's Very Large Telescope. The high…

地球与行星天体物理 · 物理学 2017-12-27 Rohini S. Giles , Leigh N. Fletcher , Patrick G. J. Irwin , Glenn S. Orton , James A. Sinclair

Using the new 23 GHz receivers at the Very Large Array (VLA), we have detected NH3(6,6) emission (nu=25.056025 GHz) from hot (>150 K) molecular clouds in the central 10 pc of the Galaxy. This is the first successful detection of NH3(6,6)…

天体物理学 · 物理学 2007-05-23 Robeson McGary Herrnstein , Paul T. P. Ho

We present a detailed study of molecular gas in the central 10pc of the Galaxy through spectral line observations of four rotation inversion transitions of NH3 made with the VLA. Updated line widths and NH3(1,1) opacities are presented, and…

天体物理学 · 物理学 2009-11-10 R. M. Herrnstein , P. T. P. Ho

We present a multiwavelength investigation of the circumnuclear environment of M31. Based on Chandra/ACIS data, we tightly constrain the X-ray luminosity of M31*, the central supermassive black hole of the galaxy, to be L (0.3-7 keV)<=…

星系天体物理 · 物理学 2015-05-13 Zhiyuan Li , Q. Daniel Wang , Bart P. Wakker

[Abridged] Most disks observed at high angular resolution show substructures. Knowledge about the gas surface density and temperature is essential to understand these. The aim of this work is to constrain the gas temperature and surface…

We use quasi-simultaneous near-infrared (near-IR) and optical spectroscopy from four observing runs to study the continuum around 1 micron in 23 well-known broad-emission line active galactic nuclei (AGN). We show that, after correcting the…

宇宙学与河外天体物理 · 物理学 2015-05-27 Hermine Landt , Martin Elvis , Martin J. Ward , Misty C. Bentz , Kirk T. Korista , Margarita Karovska

We carried out new CO($J$ = 2-1) observations toward the mixed-morphology supernova remnant (SNR) W49B with the Atacama Large Millimeter/submillimeter Array (ALMA). We found that CO clouds at $\sim$10 km s$^{-1}$ show a good spatial…

高能天体物理现象 · 物理学 2021-10-05 H. Sano , S. Yoshiike , Y. Yamane , K. Hayashi , R. Enokiya , K. Tokuda , K. Tachihara , G. Rowell , M. D. Filipović , Y. Fukui